package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController
@Slf4j
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;


    /**
     * 新增菜品
     *
     * @param dishDTO
     * @return
     */
    @PostMapping
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dishDTO) {

        log.info("新增菜品：{}", dishDTO);
        dishService.saveWithFlavours(dishDTO);

        // 删除redis缓存
        log.info("新增菜品 -> 删除redis缓存");
        String key = "dish_" + dishDTO.getCategoryId();
        redisTemplate.delete(key);

        return Result.success();
    }

    /**
     * 菜品分页查询
     *
     * @param pageQueryDTO
     * @return
     */
    @GetMapping("/page")
    @ApiOperation("菜品分页查询")
    public Result<PageResult> page(DishPageQueryDTO pageQueryDTO) {
        log.info("菜品分页查询：{}", pageQueryDTO);
        PageResult pageResult = dishService.page(pageQueryDTO);
        return Result.success(pageResult);
    }

    /**
     * 批量删除菜品
     *
     * @param ids
     * @return
     */
    @DeleteMapping
    @ApiOperation("批量删除菜品")
    // @RequestParam可以让SpringMvc自动把字符串型的ids封装到List集合当中
    public Result delete(@RequestParam List<Long> ids) {
        dishService.deleteBatch(ids);

        //  删除redis缓存，将所有的菜品缓存数据清理掉，即所有以dish_开头的key
        // 删除不能识别通配符，需要先查出所有的key,再删除
        log.info("批量删除菜品 -> 删除redis缓存");
        cleanCache("dish_*");

        return Result.success();
    }

    /**
     * 根据ID查询菜品
     */
    @GetMapping("/{id}")
    @ApiOperation("根据ID查询菜品")
    public Result<DishVO> getById(@PathVariable Long id) {
        log.info("根据ID查询菜品：{}", id);
        DishVO dishVO = dishService.getByIdWithFlavor(id);
        return Result.success(dishVO);
    }


    @PutMapping
    @ApiOperation("修改菜品")
    public Result update(@RequestBody DishDTO dishDTO) {
        log.info("修改菜品：{}", dishDTO);
        dishService.updateWithFlavor(dishDTO);

        log.info("修改菜品 -> 删除redis缓存");
        cleanCache("dish_*");

        return Result.success();
    }

    /**
     * 菜品起售停售
     * 1 起售 0 停售
     *
     * @param status
     * @return
     */
    @ApiOperation("菜品起售停售")
    @PostMapping("/status/{status}")
    public Result dishStartOrStop(@PathVariable Integer status, Long id) {
        log.info("菜品起售停售status：{} ,ID：{}", status, id);
        dishService.dishStartOrStop(status, id);

        // 删除redis缓存(清除所有菜品缓存)
        cleanCache("dish_*");

        return Result.success();
    }

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<Dish>> getAllByCategoryId(String categoryId) {
        List<Dish> list = dishService.getAllByCategoryId(categoryId);
        return Result.success(list);
    }


    /**
     * 根据键的pattern清理缓存
     * @param pattern
     */
    private void cleanCache(String pattern) {
        Set keys = redisTemplate.keys(pattern);
        redisTemplate.delete(keys);
    }
}
